苛化法再生乙烯生产中的废碱液  

Regeneration of Spent Caustic from Ethylene Plant by Cauticization

作　　者：余政哲[1] 孙德智[1] 杜龙弟[1] 段晓东[1] 史鹏飞[1] 李长海[1] 

机构地区：[1]哈尔滨工业大学环境科学与工程系,黑龙江哈尔滨150001

出　　处：《石油化工》2003年第6期517-520,共4页Petrochemical Technology

摘　　要：采用苛化技术对乙烯生产中的废碱液进行了再生研究,考察了影响再生效果的各种条件因素。当苛化反应温度大于80℃、反应时间超过2h、n(CaO)/n(Na2CO3)=1 1/1时,Na2CO3的转化率可在90%以上,并且再生碱液的物理性质以及再生碱液对CO2吸收速率与新鲜碱液基本相同。Causticization was adopted to regenerate spent caustic of ethylene plant Various conditions which affect regeneration efficiency, such as reaction temperature, reaction time, and stoichiometric ratio of CaO and Na2CO3, were investigated When temperature of causticization was higher than 80 ℃, reaction time over 120 min, and stoichiometric ratio 11/1, causticizing conversion was above 90% Regenerated caustic had approximately the same physical properties and adsorption rate of CO2 as fresh caustic

关 键 词：苛化法 乙烯生产 废碱液 再生碱液 NA2CO3 转化率 碳酸钠 氢氧化钠 

分 类 号：TQ221.211[化学工程—有机化工] X783[环境科学与工程—环境工程]